Update app.py

app.py

@@ -24,58 +24,62 @@ panel_output_watts = st.number_input("Enter the solar panel output (in watts, W)
 # Average Sunlight Hours per Day
 sunlight_hours = st.number_input("Enter the average sunlight hours per day:", min_value=0.0)
 
-# Calculate Inverter Capacity based on Peak Demand
-if peak_demand > 0:
-    inverter_capacity = peak_demand * 1.2  # Inverter capacity should be around 1.2 times the peak demand for efficiency
-    st.write(f"Recommended Inverter Capacity: {inverter_capacity:.2f} kW (1.2 times peak demand)")
-
 # Inverter Cost (user input)
 inverter_cost = st.number_input(f"Enter the cost of the inverter (in {currency}):", min_value=0.0)
 
 # Cost per Solar Panel
 panel_cost = st.number_input(f"Enter the cost per solar panel (in {currency}):", min_value=0.0)
 
-# Calculations Section
-if panel_output_watts > 0 and sunlight_hours > 0:
-    # Determine Annual Energy Consumption (in kWh)
-    annual_energy_consumption = monthly_usage * 12
+# Calculate Inverter Capacity based on Peak Demand (will be done once peak demand is entered)
+if peak_demand > 0:
+    inverter_capacity = peak_demand * 1.2  # Inverter capacity should be around 1.2 times the peak demand for efficiency
+    st.write(f"Recommended Inverter Capacity: {inverter_capacity:.2f} kW (1.2 times peak demand)")
+
+# Button to trigger the calculations
+calculate_button = st.button("Calculate Solar Energy System")
+
+if calculate_button:
+    # Perform calculations when the button is clicked
+    if panel_output_watts > 0 and sunlight_hours > 0:
+        # Determine Annual Energy Consumption (in kWh)
+        annual_energy_consumption = monthly_usage * 12
 
-    # Calculate Daily Energy Requirement (in kWh)
-    daily_energy_requirement = annual_energy_consumption / 365
+        # Calculate Daily Energy Requirement (in kWh)
+        daily_energy_requirement = annual_energy_consumption / 365
 
-    # Solar Panel Output in kWh per day (considering the sunlight hours)
-    solar_panel_output_kwh = (panel_output_watts / 1000) * sunlight_hours  # Convert watts to kWh
+        # Solar Panel Output in kWh per day (considering the sunlight hours)
+        solar_panel_output_kwh = (panel_output_watts / 1000) * sunlight_hours  # Convert watts to kWh
 
-    # Calculate the number of panels required
-    num_panels_required = daily_energy_requirement / solar_panel_output_kwh
+        # Calculate the number of panels required
+        num_panels_required = daily_energy_requirement / solar_panel_output_kwh
 
-    # Cost Calculations
-    total_solar_cost = num_panels_required * panel_cost
-    total_inverter_cost = inverter_cost
+        # Cost Calculations
+        total_solar_cost = num_panels_required * panel_cost
+        total_inverter_cost = inverter_cost
 
-    # Total Solar System Installation Cost
-    total_installation_cost = total_solar_cost + total_inverter_cost
+        # Total Solar System Installation Cost
+        total_installation_cost = total_solar_cost + total_inverter_cost
 
-    # Payback Period Calculation
-    cost_per_kwh = st.number_input(f"Enter the cost per kWh of electricity (in {currency}):", min_value=0.0)
-    annual_savings = annual_energy_consumption * cost_per_kwh
-    payback_period = total_installation_cost / annual_savings if annual_savings > 0 else float('inf')
+        # Payback Period Calculation
+        cost_per_kwh = st.number_input(f"Enter the cost per kWh of electricity (in {currency}):", min_value=0.0)
+        annual_savings = annual_energy_consumption * cost_per_kwh
+        payback_period = total_installation_cost / annual_savings if annual_savings > 0 else float('inf')
 
-    # Display Results
-    st.header("Results:")
+        # Display Results
+        st.header("Results:")
 
-    st.subheader(f"Annual Energy Consumption: {annual_energy_consumption:.2f} kWh")
-    st.subheader(f"Daily Energy Requirement: {daily_energy_requirement:.2f} kWh")
-    st.subheader(f"Solar Panel Output per day: {solar_panel_output_kwh:.2f} kWh")
-    st.subheader(f"Number of Panels Required: {num_panels_required:.2f} panels")
-    st.subheader(f"Inverter Capacity Required: {inverter_capacity:.2f} kW")
-    st.subheader(f"Total Solar Panel Cost: {total_solar_cost:.2f} {currency}")
-    st.subheader(f"Total Inverter Cost: {total_inverter_cost:.2f} {currency}")
-    st.subheader(f"Total Installation Cost: {total_installation_cost:.2f} {currency}")
-    st.subheader(f"Payback Period: {payback_period:.2f} years")
+        st.subheader(f"Annual Energy Consumption: {annual_energy_consumption:.2f} kWh")
+        st.subheader(f"Daily Energy Requirement: {daily_energy_requirement:.2f} kWh")
+        st.subheader(f"Solar Panel Output per day: {solar_panel_output_kwh:.2f} kWh")
+        st.subheader(f"Number of Panels Required: {num_panels_required:.2f} panels")
+        st.subheader(f"Inverter Capacity Required: {inverter_capacity:.2f} kW")
+        st.subheader(f"Total Solar Panel Cost: {total_solar_cost:.2f} {currency}")
+        st.subheader(f"Total Inverter Cost: {total_inverter_cost:.2f} {currency}")
+        st.subheader(f"Total Installation Cost: {total_installation_cost:.2f} {currency}")
+        st.subheader(f"Payback Period: {payback_period:.2f} years")
 
-else:
-    st.warning("Please ensure that both solar panel output and sunlight hours are greater than 0.")
+    else:
+        st.warning("Please ensure that both solar panel output and sunlight hours are greater than 0.")
 
 # Show tips for improving the app or using it effectively
 st.markdown("""